In the pure Morse Taper systems, the pressure exerted for the locking of the abutment into the implant generates a frictional resistance that is enough for a safe connection, and, if correctly braced, eliminates the risk of eventual loosening of the component. Besides, it adds to the performance of the implant/abutment set in the long term, differently from what happens to implants with hexagonal connections. Another important issue for the longevity of the frictional system is the resistance to bacterial infiltration and colonization around the peri-implant interface. The micro moving and the proximity of the prosthetic portion to peri-implant tissues (hexagonal implants) allow for microbial accumulation, which may lead to a peri-implantitis, with the risk of losing the implant. Considering the information above, according to several studies published, the sealing promoted by the Morse Taper connection has demonstrated to be hermetical in relation to bacterial infiltration.